Continuing discussion from this thread. I don't get what would be dangerous with vaccines. Back in 2009 (was the H1N1 flu in 2009? Anyways, that year), there were mass vaccination campaigns in Canada. Some of the people complained because their arm hurt due to the adjuvant in the vaccine. Some people believed it could cause auto-immune reactions but we haven't heard of it in the media. I can't tell if it was that bad, as in my school I have been given the adjuvant-free version meant for pregnant women for some reason. What I do know is that we have eradicated polio, an illness which left my godmother with a crooked leg. She has always had a limp, but it has gotten much worse over the year due to her knee deteriorating. She has been forced to stop working because of this. It wouldn't have happened if the vaccine had been available at the time. Smallpox and rinderpest have been eradicated, poliomyelitis and dracunculiasis are on the way to be (with about a thousand cases per year worldwide) and many others are disappearing on a regional scale. [https://en.wikipedia.org/wiki/Eradication_of_infectious_diseases] As with autism claims, no study backs this.